Ford 861...

[Jet Star]

I have a '57 Ford 861 LP model that I use to cut 15 acres of grass with on a bi-weekly basis...All in all, a very good tractor with factory PS too...

I do have a chronic problem with the gear shift selector shaft, however, that I need some help with...The transmission is a 5 speed unit and sometimes when you move the gearshift handle (shaft) up or down to select the proper gear range transmission oil will come out of the gearshift selector barrel that the gearshift handle goes into. I'm not sure that I'm using the right terminology here but in essence as the gearshift shaft goes up and down when trying to select the proper gear it allows oil to come out of the housing (or barrel) which is attached to the transmission gear shift cover plate... Once the transmission oil escapes it runs down the outside of the transmission...Not Good...Can't stand an oil leak of any kind....

I have talked to some parts folks and they say that there is a seal which is installed internally on the gear shift shaft or in the barrel or shaft linkage to prevent any type of oil from seeping or escaping as I have described. While I don't have an exploded view of the trasmission and gear shift selector area, I've been told the part number of the seal I need is NDA 7288A but I can't find that part number anywhere on a search engine....

If someone has a fix for this issue or knows of a seal which would correct this problem I would appreciate hearing about it very much...

Thanks in Advance for Assistance on this issue...

Jet Star

 

[Soundguy]

sure you have an exploded view.. everyone on the internet does. go to the cnh website and do a parts search.. gives you an exploded diagram by section with a parts list.

first thing I'd do is make sure your trans fluid is not overfull..

I'd also sugest getting a service and parts manual for your machine.. good info in those books.. plus the parts diagrams you are looking for...

the seal is listed as no longer available.. though I'd be surprised if you couldn't come up with something that would work via an on the shelf oring or lip seal, based on ID, OD and thickness.

in any event, I'd almost think your tranny was WAY overfull if it is leaking THAT easy.. even with slinging oil and whatnot.

trans level plug is on the right side by yer heel.

see my next post.. I'm doing your work for ya. # 58 is the one ya want.. see the attached diagram.. ( this is one of the ones available from the cnh website.. )

soundguy

 

[Soundguy]

1 1 NLS No Longer Serviced Transmission Assy., L/Gear Shift Cover, Single Clutch, Before S/N 14257 {NDA7001D}, Years: 01/01/1955-12/31/1957
1 1 NLS No Longer Serviced Transmission Assy., L/Gear Shift Cover, Double Clutch, BSN 14257 {NDA7001E}, Years: 01/01/1955-12/31/1957
1 1 NLS No Longer Serviced Transmission Assy., L/Gear Shift Cover, 10" Single Clutch, After S/N 14256 {310832}, Start Year: 01/01/1958
1 1 NLS No Longer Serviced Transmission Assy., L/Gear Shift Cover, 9' Double Clutch, ASN 14256 {310872}, Start Year: 01/01/1958
1A 1 NDA7005B Case Assy., Transmission W/Brake Shaft Thru Transmission, Before S/N 14257, No Longer Serviced, Years: 01/01/1955-12/31/1957
1A 1 NLS No Longer Serviced Case Assy., Transmission W/Brake Shaft, Under Center Housing, After S/N 14256 {310836}, Start Year: 01/01/1958
1B 2 NDA7508A BUSHING Bushing, Cross Shaft, Start Year: 01/01/1955
AR PL PROCURE LOCALLY Nut, Hex, 7/16"-14
2 PL PROCURE LOCALLY Bolt, 7/16"-14 x 1.38, Years: 01/01/1955-12/31/1957
AR PL PROCURE LOCALLY Nut, Hex, 7/16"-14
AR PL PROCURE LOCALLY Washer, Flat, 7/16"
AR PL PROCURE LOCALLY Bolt, 7/16"-14 x 1.38
AR PL PROCURE LOCALLY Nut, Hex, 5/8"-18
2 PL PROCURE LOCALLY Bolt, 5/8"-18 x 3.12, Start Year: 01/01/1955
1 PL PROCURE LOCALLY Bolt, Hex, 7/16"-14 x 1", Start Year: 01/01/1955
4 PL PROCURE LOCALLY Bolt, 7/16"-14 x 1.50, Start Year: 01/01/1955
2 PL PROCURE LOCALLY Bolt, HH, 7/16"-14 x 1.94, Start Year: 01/01/1955
2 73279S PIN Pin, Dowel, 3/8" x .75, No Longer Serviced, Start Year: 01/01/1955
1 PL PROCURE LOCALLY Pin, Cotter, 7/32" x 1, Start Year: 01/01/1955
3 74116S PLUG Plug, Expansion, 15/16", Start Year: 01/01/1955
2 1 NLS No Longer Serviced Plate, Engine Rear Cover, 1/4" Thick, 4000 Row Crop Only {310836}, Years: 01/01/1955-12/31/1957
2 1 310741 PLATE Plate, Engine Rear Cover, 1/8" Thick, All Purpose Only, No Longer Serviced, Start Year: 01/01/1958
2 1 NLS No Longer Serviced Plate, Engine Rear Cover, 1/4" Thick, 4000 Row Crop Only {310767}, Start Year: 01/01/1958
3 1 NCA7306A Cover, Transmission Vase Front Lower, No Longer Serviced, Start Year: 01/01/1955
4 1 14457281 O-RING O-Ring, -114, Cl 7, .612" ID x .103" Thk, Start Year: 01/01/1955
5 1 87055S92 O-RING O-Ring, 1.125" ID x .139" Thk, Start Year: 01/01/1955
6 1 NCA7518A Cover, Transmission Inspection Hole, No Longer Serviced, Start Year: 01/01/1955
7 4 PL PROCURE LOCALLY Bolt, HH, 5/16"-18 x 5/8", Start Year: 01/01/1955
8 AR PL PROCURE LOCALLY Pin, Cotter, 5/32"x 1"
9 2 NLS No Longer Serviced Plug, Square Hd., 1/4"-14 {87604S}, Start Year: 01/01/1955
10 4 NDA7233A PLUNGER Plunger, Transmission Gear Shifter Interlock, Start Year: 01/01/1955
11 4 83407013 SPRING Spring, Transmission Gera Shift Rail, Start Year: 01/01/1955
12 1 E5NN7Z307AA GASKET O-Ring, Pressure Tube Between Center Housing & Transmission Case, Start Year: 01/01/1955
13 4 747238 PLUG
14 1 NDA7240A Rail, Transmission 1st & 2nd Gear Shifter, No Longer Serviced, Start Year: 01/01/1955
15 1 NDA7241A Rail, Transmission 4th & 5th Gear Shifter, No Longer Serviced, Start Year: 01/01/1955
16 1 NDA7242A Rail, Transmission 3rd & Reverse Gear Shifter, No Longer Serviced, Start Year: 01/01/1955
17 2 PL PROCURE LOCALLY Pin, Dowel, 1/4" x 1/2", Start Year: 01/01/1955
18 1 B9NN16A795A GASKET Gasket, No Longer Serviced, Start Year: 01/01/1955
19 1 NDA7723C BRACKET Bracket, Transmission Reverse Idler Gear, No Longer Serviced, Start Year: 01/01/1955
20 AR PL PROCURE LOCALLY Washer, Lock, 7/16"
21 AR PL PROCURE LOCALLY Nut, Hex, 7/16"-20
22 6 PL PROCURE LOCALLY Bolt, Self-Locking, 7/16"-14 x 1", Start Year: 01/01/1955
23 2 186397 Pin, Transmission Reverse Idler Gear Bracket Dowel, No Longer Serviced, Start Year: 01/01/1955
24 1 14466080 O-RING O-Ring, 3.984" ID x .139" Thk, Bracket Transmission Case, Start Year: 01/01/1955
25 1 NDA7141A GEAR Gear & Bushing Assy., Transmission Reverse Idler, No Longer Serviced, Start Year: 01/01/1955
26 1 NDA7140A SHAFT Shaft, Transmission Reverse Idler Gear, Start Year: 01/01/1955
27 1 NDA7143A BRONZE BUSHING Bushing, Reverse Idler Gear, Start Year: 01/01/1955
28 1 NDA7149A WASHER Washer, Transmission Reverse Idler Thrust, Front, Start Year: 01/01/1955
29 1 NDA7029A THRUST WASHER Washer, Transmission Reverse Idler Thrust, Rear, No Longer Serviced, Start Year: 01/01/1955
30 5 8N7245 SCREW Screw, Transmission Frok Lock, Start Year: 01/01/1955
31 5 PL PROCURE LOCALLY Nut, Hex, 3/8"-24, Start Year: 01/01/1955
32 1 NDA7230C FORK Fork, Transmission 4th & 5th Gear Shifter, No Longer Serviced, Start Year: 01/01/1955
33 1 PL PROCURE LOCALLY Screw, 3/8"-24 x 2.04, Start Year: 01/01/1955
34 1 NDA7231B Fork, Transmission Low & 2nd Gear Shifter, No Longer Serviced, Start Year: 01/01/1955
35 1 NDA7289B FORK Fork, Transmission 3rd & Reverse Gear Shifter, No Longer Serviced, Start Year: 01/01/1955
36 1 NDA7279B Gate, Transmission Gear Shifter Low & 2nd, No Longer Serviced, Start Year: 01/01/1955
37 1 NDA7411B Gate, Transmission 3rd & Reverse Shifter Shaft, No Longer Serviced, Start Year: 01/01/1955
38 1 NDA7229D LOCK Lock, Interlock, Gear Shift, Start Year: 01/01/1955
39 1 NDA7212A SHAFT Shaft, Transmission Gear Shift, No Longer Serviced, Start Year: 01/01/1955
40 1 NDA7223A GASKET Gasket, Gear Shift Cover, Start Year: 01/01/1955
41 1 NDA7211B Cover Assy., Transmission, No Longer Serviced, Start Year: 01/01/1955
42 10 PL PROCURE LOCALLY Bolt, HH, 3/8"-16 x 3/4", Start Year: 01/01/1955
43 1 8N11500 IGNITION SWITCH Switch Assy., Starter Push, Start Year: 01/01/1955
44 1 8N11529 GASKET Gasket, Starter Switch, Start Year: 01/01/1955
45 AR PL PROCURE LOCALLY Washer, Lock, 3/4"
46 1 PL PROCURE LOCALLY Nut, Hex, 3/4"-16, Start Year: 01/01/1955
1 PL PROCURE LOCALLY Screw & Washer, #8-32 x .25 Round Hd., Start Year: 01/01/1955
47 1 9N7010 PLUG Plug or Cap, Transmission Filler, Start Year: 01/01/1955
48 1 8N7011 GASKET Seal, Gear Shift Lever, Start Year: 01/01/1955
49 1 C5NN7277C SEAL Seal, Gear Shift Lever, Replaces P/N C0NN7277A, Start Year: 01/01/1955
50 1 NDA7202A Lever, Gear Shift, No Longer Serviced, Start Year: 01/01/1955
51 1 PL PROCURE LOCALLY Key, Woodruff, 1/8" x 5/8", Start Year: 01/01/1955
52 AR PL PROCURE LOCALLY Washer, Flat, 3/8"
53 AR PL PROCURE LOCALLY Washer, Internal Tooth, 3/8"
54 1 PL PROCURE LOCALLY Nut, Blind, 3/8"-24, Start Year: 01/01/1955
55 1 83905584 BALL Ball Assy., Transmission Gear Shift Lever, Start Year: 01/01/1955
56 1 NLS No Longer Serviced Rod, Interlock, Gear Shift {NDA77213A}, Start Year: 01/01/1955
57 1 NDA7227A Spring, Gear Shift Lever, No Longer Serviced, Start Year: 01/01/1955
58 1 NDA7288A Seal Assy., Transmission Shifter Shaft Only, No Longer Serviced, Start Year: 01/01/1955

 

[Jet Star]

Soundguy...

As usual, you're the one voice I like to hear and have a response from on these old tractors...Thanks for giving a somewhat newbie a lesson on where to look for these exploded views...At least I know (now) to go to the cnh website until I can get the proper manuals...

One more more question if you don't mind...

>> Do I have to remove the transmission cover plate to get to this seal or can it be accessed by just removing the gear shift lever and removing the sequenced compontents until I get to it ..??? Never have been in there but not scared to go in that area either...

It was not my intention for you to do my work (but I do appreciate you taking the time to show me where to look) and...

Thanks Very Much for Your Help...It is Greatly Appprecated...

Regards...

Jet Star

sure you have an exploded view.. everyone on the internet does. go to the cnh website and do a parts search.. gives you an exploded diagram by section with a parts list.

first thing I'd do is make sure your trans fluid is not overfull..

I'd also sugest getting a service and parts manual for your machine.. good info in those books.. plus the parts diagrams you are looking for...

the seal is listed as no longer available.. though I'd be surprised if you couldn't come up with something that would work via an on the shelf oring or lip seal, based on ID, OD and thickness.

in any event, I'd almost think your tranny was WAY overfull if it is leaking THAT easy.. even with slinging oil and whatnot.

trans level plug is on the right side by yer heel.

see my next post.. I'm doing your work for ya. # 58 is the one ya want.. see the attached diagram.. ( this is one of the ones available from the cnh website.. )

soundguy

 

[Soundguy]

can't say that I've replaced that seal before ( or ever needed to ).. the sequence from the diagram leads you to believe it is top loaded.. but I bet having hte cover off might make it easier, if it is indeed a lip seal and not an oring. Again.. I don't have that seal to look at and havn't done that repair. once you have the nut and shifter off it will likely be a quick decision as to wether it can be repalced or not without pulling the top.

soundguy

 

[Jet Star]

Soundguy...

Thanks Again for the Help...

Regards...

Jet Star

 

[Soundguy]

wasn't any help on that last one.

good luck.

once you pull it down you will know if it is a lip seal, ruberized packing, or a square cut or round profile oring.

from there you should be able to figure out how to repalce it and with what.. ie.. conventional lip seal if it does not have a seat.. or an oring or other packing if it does have a seat.

good luck

ps.. post your results.. they stay in the archive.. years from now someone else may have the same issue and benefit from the info in this thread.

check that oil level first though..

soundguy

 

[Jet Star]

Soundguy...

Will report back my findings...

10-4 on the fluid level...

Need to get a transmission cover plate gasket first as I feel that's where the action is going to be...

Later...

Jet Star...

wasn't any help on that last one.

good luck.

once you pull it down you will know if it is a lip seal, ruberized packing, or a square cut or round profile oring.

from there you should be able to figure out how to repalce it and with what.. ie.. conventional lip seal if it does not have a seat.. or an oring or other packing if it does have a seat.

good luck

ps.. post your results.. they stay in the archive.. years from now someone else may have the same issue and benefit from the info in this thread.

check that oil level first though..

soundguy

 

[Soundguy]

cnh dealer sells them still.


soundguy